How to soundproof a room?

How to soundproof a room?

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When you intend to create a recording studio or simply a room that avoids the entry of noises that disturb the tranquility, it is necessary to carry out a soundproofing. Often many inexperienced people confuse soundproofing with acoustic correction, these are 2 completely different things.

What is the acoustic correction used for? – The acoustic correction allows to eliminate the acoustic reflections during a microphone recording so that the instrument or the recorded voice are not contaminated by the reflections that otherwise would enter the microphone and dirty the sound.

What is soundproofing for? – By carrying out soundproofing work on a room, you can achieve a quiet environment without hearing noises from outside. The soundproofing also allows you to avoid disturbing the neighbors in case you play an instrument, turn up the volume of the radio or simply make noise in some way but be careful, the soundproofing is not used to obtain an acoustic treatment, it only serves to isolate a room from the outside.

A recording studio needs both soundproofing and acoustic correction, if instead it is located in a remote place and away from annoying neighbors, it is sufficient to do only an acoustic treatment.

How is a room soundproofed?

There are 4 methods:

  • Adding Density / Thickness to the Walls
  • Damping / Damping
  • Decoupling
  • Filling of Blanks

1. Adding density / thickness

Walls need a lot of density so it’s good to make a thick concrete wall. If the wall is already present, high-density materials must be added. When building a room from scratch, an adequate thickness can be achieved simply by building a thick wall, with a dense material such as concrete. But in case you need to add density to an existing room, you need to add high density materials such as “Sheetblock”.

 

2. Damping

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This other technique consists in gluing rigid panels such as MDF, plywood or plasterboard to the walls with the Green Glue that allows to dissipate the kinetic energy of sound transforming it into heat, it is the most popular and cheapest soundproofing material on the market. You can create an ingenious acoustic barrier for your studio that can be added to any area of the room, including the floor, ceiling, walls, or even the door.

3. Decoupling

An example of this sound insulation technique is the construction of a plasterboard wall spaced from an already existing wall so that an air chamber is created that can become even more effective by adding insulating material, among the cheapest we find wool. glass or high-density rock wool.

4. Filling in the blanks

This very simple precaution consists in sealing all the small cracks and holes in the room. To do this you need:

  • Acoustic sealant : With this product you can seal any crevice in the room as it is soft and resistant over time.
  • Foam seals : to isolate electrical sockets, windows, doors, etc.
  • Door knocker : to close the gap between the door and the floor.
Soundproofing